1042-S e-filing software

File Form 1042-S online for payments to foreign persons

Prepare, review, e-file, and distribute Form 1042-S in one place. Upload payment and withholding data from Excel, and Greenshades handles filing and delivery.

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The IRIS switch

1042-S filing moves to IRIS this season. Your process doesn't have to.

IRIS started accepting Form 1042-S in 2026, and it's the only way to e-file tax year 2026 forms once FIRE retires. Filing there yourself requires an IRIS Transmitter Control Code. When you file through Greenshades, your forms go out under our TCC, so there's no application to wait on. Get started today with Greenshades.

How it works with Greenshades

From payment records to filed 1042-S forms

  1. Bring in your data

    Upload recipient, income code, and withholding information with the Greenshades Excel template, with one row per recipient and income type.

  2. Review and correct

    Check recipient names, country codes, TINs, income codes, exemption codes, and tax rates in a spreadsheet-style editor before you file.

  3. Verify before filing

    Review every form against the data you imported, so the copy filed with the IRS matches the copy your recipients get.

  4. File and distribute

    E-file with the IRS and get copies to recipients by print and mail, box and ship, or download. Print and mail covers recipients outside the U.S.

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“I’ve reduced costs and saved time on compiling, printing and mailing the 1099 year-end forms with Greenshades. I don’t have to worry about how filing on time with the IRS, because Greenshades does that for me.”

Toni Jones Accounting Manager - AP, American College of Emergency Physicians

Tax year 2026

What to know before you file

Mar 15, 2027
Form 1042-S due date

Due to the IRS and to recipients on the same day.

IRIS
Required for 2026 forms

FIRE is retired, so tax year 2026 Forms 1042-S must be e-filed through IRIS.

10 +
Returns trigger e-filing

Filers with 10 or more information returns must e-file. Financial institutions must e-file regardless of volume.

Frequently asked questions

Questions about filing 1042-S forms

Form 1042-S reports U.S.-source income paid to foreign persons and any tax withheld on it. Withholding agents file one for each recipient and each type of income, covering payments like scholarships, compensation for services, royalties, and most gambling winnings. Filers of Form 1042-S also file Form 1042, the annual withholding tax return.

Yes. Year-End Forms works as a standalone solution. Upload your 1042-S data with the Excel template.

Withholding agents file Form 1042-S. A withholding agent is any person or organization that controls or pays U.S.-source income subject to withholding to a foreign person. In most cases, that's the U.S. business or institution making the payment.

Yes. A 1042-S is still required when no tax was withheld because a tax treaty or the Internal Revenue Code exempted the income.

Forms 1042-S are due to the IRS and to recipients by March 15, 2027.

Yes. If you file Form 1042-S, you also file Form 1042, the annual withholding tax return. Greenshades prepares Form 1042 alongside your 1042-S forms.

Each recipient gets a separate Form 1042-S for each type of income you paid them. Greenshades imports and reviews them as a batch, so a recipient with three income types doesn't mean three rounds of data entry.

Yes. Greenshades can print and mail a copy to each recipient or box and ship them to you to distribute. You can also download recipient copies. Print and mail covers recipients outside the U.S.

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